Rufus- No worries, I tend to be much the same way and specifically why I went looking rather than asking here as I knew answers on rear cover material would be all over the map. My original concerns stemmed from no displayed US FCC Declaration of Conformity label as mine came into country via Canada but surprisingly didn't have a Canadian DoC label either. For the US that requirement reads as follows:
"Declaration of Conformity
The Federal Communications Commission established the regulations on electromagnetic interference under Part 15 of the FCC rules in 1975. After several amendments over the years, these regulation were reconstituted as the Declaration of Conformity and Certification procedures in 1998.
By the regulation, the FCC DoC certification mark is mandatory for devices classified under part 15 (IT equipment like computers, switched-mode power supplies, monitors etc., television receivers, cable system devices, low-power transmitters, un-licensed personal communication devices) and part 18 (industrial, scientific, and medical (ISM) devices that emit RF radiation) of the FCC regulations."
6-7 years ago digital boards were notorious for things like making cellphones ring errantly from escaping RMI. One of my early-version iPhones was rendered useless if within 5-6 feet of of my then new amp with dual B&O class D ICE boards. Turns out that case was leaking RFI via small cooling slots on its underside. I knew a plastic case bottom would never pass muster on obtaining a DoC for the US as its invisible to RFI/EMI but still don't understand how or why Devialet is flying under the radar compliance-wise in other countries which have similar requirements on leaky RFI/EMI. I don't believe the laws regarding displaying that DoC label have much in the way of teeth but believe it would be in Devialet's best interest to be in voluntary compliance in the event of some liability or class action suit were brought against them.
The lug I believe you're speaking of on yours that was milled down is the small white LED light viewing port that shines on the mounting surface directly below the main power button. They must've established a correct depth for that as mine is fully powder coated and absent of any raw aluminum. However, all four of my outer mounting contact points that the 4 short mounting screws go into have had their underside footers ground flat where they mate to and butt up against the underside of the Devialet top.
The nuts on the OEM binding posts are 12mm. Most all aftermarket binding post nuts will be 14mm reducing space between nuts further than an OEM setup. The guitar nut tool shown previously won't be of much use with 14mm nuts when all the nuts are tightened and parallel to each other as the nuts are too close together when fully tightened even for that tool. However once one nut is backed off a mm or two it will work all the way out until that particular nut is removed. Then repeat for all others. However, the best method is still going to be using small stacks of plastic washers as I've mentioned previously as there's no denying that tightening those nuts fully with only 4 or 5 threads engaged is going to be a LOT faster than if 25 or so threads are engaged by the nut. And fastener/binding post mounting strength remains identical either way.
"Declaration of Conformity
The Federal Communications Commission established the regulations on electromagnetic interference under Part 15 of the FCC rules in 1975. After several amendments over the years, these regulation were reconstituted as the Declaration of Conformity and Certification procedures in 1998.
By the regulation, the FCC DoC certification mark is mandatory for devices classified under part 15 (IT equipment like computers, switched-mode power supplies, monitors etc., television receivers, cable system devices, low-power transmitters, un-licensed personal communication devices) and part 18 (industrial, scientific, and medical (ISM) devices that emit RF radiation) of the FCC regulations."
6-7 years ago digital boards were notorious for things like making cellphones ring errantly from escaping RMI. One of my early-version iPhones was rendered useless if within 5-6 feet of of my then new amp with dual B&O class D ICE boards. Turns out that case was leaking RFI via small cooling slots on its underside. I knew a plastic case bottom would never pass muster on obtaining a DoC for the US as its invisible to RFI/EMI but still don't understand how or why Devialet is flying under the radar compliance-wise in other countries which have similar requirements on leaky RFI/EMI. I don't believe the laws regarding displaying that DoC label have much in the way of teeth but believe it would be in Devialet's best interest to be in voluntary compliance in the event of some liability or class action suit were brought against them.
The lug I believe you're speaking of on yours that was milled down is the small white LED light viewing port that shines on the mounting surface directly below the main power button. They must've established a correct depth for that as mine is fully powder coated and absent of any raw aluminum. However, all four of my outer mounting contact points that the 4 short mounting screws go into have had their underside footers ground flat where they mate to and butt up against the underside of the Devialet top.
The nuts on the OEM binding posts are 12mm. Most all aftermarket binding post nuts will be 14mm reducing space between nuts further than an OEM setup. The guitar nut tool shown previously won't be of much use with 14mm nuts when all the nuts are tightened and parallel to each other as the nuts are too close together when fully tightened even for that tool. However once one nut is backed off a mm or two it will work all the way out until that particular nut is removed. Then repeat for all others. However, the best method is still going to be using small stacks of plastic washers as I've mentioned previously as there's no denying that tightening those nuts fully with only 4 or 5 threads engaged is going to be a LOT faster than if 25 or so threads are engaged by the nut. And fastener/binding post mounting strength remains identical either way.
Statements in my posts are opinion only, not to be construed as fact. Any projects I engage in are at my own risk! Their outcome cannot be assured and may result in success, small/no change or catastrophic failure. I encourage no one rely on anything I say or do as gospel and to realize your mileage may vary!
